Hammer



FIG. 1 is a front view of a hammer showing my new design;

FIG. 2 is a rear view of the hammer;

FIG. 3 is a left side view of the hammer, a right side view being a mirror image thereof;

FIG. 4 is a top view of the hammer;

FIG. 5 is a bottom view of the hammer; and,

FIG. 6 is a sectional view of the hammer taken along line 6-6 of FIG. 3. 

CLAIM The ornamental design for a hammer, as shown and described. 